Grate-bar.



Patented Dec. 4, |900.

G. S. SEBGEANT.

GRATE BAB.l (Application med June 8, 1899.)

(N0 Model.)

ATTORNEYS.

m. m... m W

Urine rnrns Arnim GEORGE S. SERGEANT, OF GREENSBOROUGH, NORTH CAROLINA.

G RATE-BAR.

SPECIFICATION forming part of Letters Patent No. 663,365, dated December4, 1900.

Application tiled June 8,1899. Serial No. 719,842. (No model.)

T0 all whom/tt may concern:

Be it known that I, GEORGE S. SERGEANT, residing at Greensborough, inthe county of Guilford and State of North Carolina, have made certainnew and useful Improvements in Grate-Bars, of which the following is aspecification.

My invention is an improvement in grate- `loars for furnaces or otherlike purposes, and

has for an object to provide a grate-bar of improved construction formedin sections which are so connected at their ends or joints as to form aself-supporting connection at such point.

The invention consists in certain novel constructions and combinationsof parts, as will be hereinafter described, and pointed out in theclaims.

In the drawings, Figure lis a sectional side elevation of a part of afurnace with my improved grate-bar in place. Fig. 2 is a detailperspective view of one of the grate-bars with the sections connected.Fig. 3 is a detail perspective view of one of the joints or connectionsbetween the sections. Fig. 4 is a detail perspective view showing themeeting ends of the sections detached, and Fig. 5 is a cross-sectionalview of the coupling, and Fig. 6 illustrates in detail the combinedcoupling and spacing cuff or clasp The grate-bar is supported at itsends in the usual or any desired manner and is usually formed of the endsections A or intermediate sections B, the end sections A beingsupported at their outer ends on walls or other suitable supports in thefurnace. At their meeting ends the several sections are constructedalike, so the description of one of the joints will answer for all.Manifestly the intermediate sections may be of any suitable number andof any desired length in order to secure any desired length of gratebar.I usually in practice make the intermediate sections of assortedlengths,so a manufacturer or dealer can, with a limited supply of theassorted lengths, fill any order which may be made upon him in the usualcourse of business.

In coupling the sections I aim to effectthe coupling in such manner asto secure the desired strength, avoid the necessity of crosssupports,and make the coupling so it will reinforce the tire-surface at the jointand will also operate to space the adjacent grate-bars apart, so anydesired spacing of the grate-bars may be secured.

In securing the above results I`provide the grate-bar sections at theirmeeting ends with portions C, which are of reduced thickness, are lappedside by side when coupled, and are so secured by a cud or clasp D, whichtits over the lapped meeting portions from above, so it will beself-retaining by gravity. The end portions O when lapped side by sideare interlocked by providing each with a 'transverse opening O and witha lateral stud C2 to enter the opening O of the meeting section. Thecuff D is provided in its under side with a recess D, which fits downover the lapped portions O when they are interlocked, so the cuf willhold them in such relation.

By the described construction it will be seen the grate-bar sections arelapped alongside each other and interlock at their meeting ends, and thecuff or clasp fits over the lapped portions from above, holding themintel-locked. The cuff is readily removable, so it can be interchanged,and this cuffhas an important additional function, in thatit forms ameans for spacing the grate-bars apart to any desired degree. To thisend I form the cuff D at its opposite sides with laterally-extendingportions E, and I make these cuffs in series with portions E ofdifferent widths, as will be understood from Fig. 6, so in operation acuff D having a narrower or wider projecting portion E may be employedaccording to the Width of the spacing desired. This is an importantfeature, as by it I am able to secure by means of a few extra patternsfor the cuffs or spacers any desired spacing between the grate-bars.

When the grate-bar sections are coupled as shown in the drawings, theywill be self-supported at the coupled joint, thus avoiding the necessityof any cross-bars or similar supports between the opposite ends of thegratebars.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. A grate-bar made in longitudinal sections and having the meeting endsof said IOO sections overlapped and interlocked, and a cui or claspfitting over the overlapped and interlocked portions whereby thesectional grate-bar is held with its sections interlocked and isself-supporting at the joint of the sections, and whereby grate-barsurfaces of different lengths may be supplied in the mannersubstantially as set forth.

2. A grate-bar made in sections and having a detachable clasp or eufitted over the sections at the joint thereof and provided withlaterally-extended portions whereby to space the adjacent grate-barsapart, the cuff or clasp being removable whereby cus may be interehangedto secure any desired spacing, substantially as set forth.

3. A grate-bar made in sections and having the meeting ends of saidsections lapped side by side and inter-locked, and the cuff or claspfitted over said lapped ends whereby to secure the same interlocked andto cover and to reinforce the fire-surface of the grate-bar at thejoint, substantially as set forth.

4. A grate-bar made in sections with the ceases sections lappedalongside each other and interloeked laterally at their meeting ends,and the cu or clasp fitted over the lapped por- -tien-from above wherebyit will be heldin place by gravity, substantially as set forth.

5. A grate-bar composed of sections having at their meeting endsportions lapped alongside each other and provided each with a transverseopening and with a lateral stud entering the opening in the othersection, and the cuff or clasp fitting over the lapped portions of thesections, substantially as set forth.

6. A grate-bar made Vin longitudinal sections having at their meetingends portions ofreduced thickness lapped alongside each other, and acui? fitting over the lapped meeting ends and forming a [ire-surfaceabove the same, substantially as set forth.

GEORGE S. SERGEANT.

Witnesses:

H. H. TATE,

W. E. ALLEN.

